#!/usr/bin/env ruby

require 'tempfile'
require 'base64'

options = {}

def capture(name)
  val = nil
  ARGV.each_with_index do |arg, index|
    if arg == name
      val = ARGV[index+1]
      ARGV.delete_at(index+1)
      ARGV.delete_at(index)
    end
  end
  val
end

options[:audio] = capture("--audio")
options[:message] = capture("-m")

if options[:audio].nil? || options[:message].nil?
  puts "Usage: git audio-commit --audio <audio-file> -m <message> ..."
  exit(1)
end

tempfile = Tempfile.new("git-audio-commit")

begin
  tempfile << options[:message]
  tempfile << "\n\n--BEGIN-AUDIO--\n"
  tempfile << Base64.encode64(File.read(options[:audio]))
  tempfile << "--END-AUDIO--\n"
  tempfile.close

  system("git commit -F #{tempfile.path} #{ARGV.join(" ")}")
ensure
  tempfile.unlink
end